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Sam G B Robert

Biographic Data

ID635668
NAMESam G B Robert
GIVEN NAMESSam G B
FAMILY NAMERobert
SIGNATUREROBERT S G B
AFFILIATIONSLiverpool John Moores University
ORCID0000-0003-3986-0254
VERIFIEDYes
TOTAL WORKS17
TOTAL CITATIONS113
AUTHOR COUNT17
EDITOR COUNT0
FIRST PUBLICATION YEAR2008
LATEST PUBLICATION YEAR2026
H-INDEX4
  • Mother-Infant Sleeping Arrangements and Night-Time Touch Behaviors

    Open Access•Ingrid Boedker, Helen L Ball et al.•ARTICLE•Journal of Nonverbal Behavior•2026

    Affective touch is interpersonal touch which carries an emotional valence and is important to humans and other primates for stress resilience and social bonding. It is acknowledged that infants who sleep in close proximity to a caregiver receive more touch. However, mother-infant night-time touch has not been investigated with an understanding of affective touch mechanisms and with infant night-time location treated as a continuous rather than ca…

  • No relationships between self-reported Instagram use or type of use and mental well-being: A study using a nationally representative online sample of UK adults

    Open Access•Sam G B Robert, Connor Malcolm et al.•ARTICLE•Cyberpsychology Journal of…•2024

    Use of Instagram has grown rapidly in the last decade, but the effects of Instagram use on well-being are still unclear, with many studies based on younger samples with a female bias. The aim of this study was to examine the associations between Instagram use and levels of anxiety, depression, and loneliness in a nationally representative sample of UK adults by age and gender. An online sample of 498 UK adults were recruited using Prolific (Age: …

  • Hexaco Personality Factors and their Associations with Facebook use and Facebook Network Characteristics

    Open Access•Riana M Brown, Sam G B Robert et al.•ARTICLE•Psychological Reports•2023

    Personality factors affect the properties of 'offline' social networks, but how they are associated with the structural properties of online networks is still unclear. We investigated how the six HEXACO personality factors (Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness and Openness to Experience) relate to Facebook use and three objectively measured Facebook network characteristics - network size, density, and num…

  • Loneliness is negatively related to Facebook network size, but not related to Facebook network structure

    Open Access•Riana M Brown, Sam G B Robert et al.•ARTICLE•Cyberpsychology Journal of…•2021

    High levels of loneliness are associated with poorer outcomes for physical and mental health and a large body of research has examined how using social media sites such as Facebook is associated with loneliness. Time spent on Facebook tends to be associated with higher levels of loneliness, whereas a larger number of Facebook Friends and more active use of Facebook tends to be associated with lower levels of loneliness. However, whilst the networ…

  • Social Network Analysis of a Chimpanzee (Pan troglodytes) Group in Captivity Following the Integration of a New Adult Member

    Open Access•Sergio Díaz, Lindsay Murray et al.•ARTICLE•International Journal of…•2020•Cited by: 1•References: 55

    Management of primates in captivity often presents the challenge of introducing new individuals into a group, and research investigating the stability of the social network in the medium term after the introduction can help inform management decisions. We investigated the behavior of a group of chimpanzees ( Pan troglodytes ) housed at Chester Zoo, UK over 12 months (divided into three periods of 4 months) following the introduction of a new adul…

  • Complex Sociality of Wild Chimpanzees Can Emerge from Laterality of Manual Gestures

    Open Access•Anna I Roberts, Lindsay Murray et al.•ARTICLE•Human Nature•2019•Cited by: 2•References: 96

    Humans are strongly lateralized for manual gestures at both individual and population levels. In contrast, the laterality bias in primates is less strong, leading some to suggest that lateralization evolved after the Pan and Homo lineages diverged. However, laterality in humans is also context-dependent, suggesting that observed differences in lateralization between primates and humans may be related to external factors such as the complexity of …

  • Managing Relationship Decay: Network, Gender, and Contextual Effects

    Open Access•Sam G B Robert, Sam B G Robert et al.•ARTICLE•Human Nature•2015•Cited by: 7•References: 73

    Relationships are central to human life strategies and have crucial fitness consequences. Yet, at the same time, they incur significant maintenance costs that are rarely considered in either social psychological or evolutionary studies. Although many social psychological studies have explored their dynamics, these studies have typically focused on a small number of emotionally intense ties, whereas social networks in fact consist of a large numbe…

  • Time as a limited resource: Communication strategy in mobile phone networks

    Open Access•Giovanna Miritello, Esteban Moro et al.•ARTICLE•Social Networks•2013

  • Altruism in social networks: Evidence for a 'kinship premium

    Open Access•Oliver Scott Curry, Oliver Curry et al.•ARTICLE•British Journal of Psychology•2013•Cited by: 18•References: 46

    Why and under what conditions are individuals altruistic to family and friends in their social networks? Evolutionary psychology suggests that such behaviour is primarily the product of adaptations for kin- and reciprocal altruism, dependent on the degree of genetic relatedness and exchange of benefits, respectively. For this reason, individuals are expected to be more altruistic to family members than to friends: whereas family members can be th…

  • A structure-based repertoire of manual gestures in wild chimpanzees: Statistical analyses of a graded communication system

    Open Access•Anna I Roberts, Sarah-Jane Vick et al.•ARTICLE•Evolution and Human Behavior•2012

  • Closeness, loneliness, support: Core ties and significant ties in personal communities

    Open Access•Jens F Binder, Jens Binder et al.•ARTICLE•Social Networks•2012

  • Effects of Duration and Laughter on Subjective Happiness Within Different Modes of Communication: Happiness and mode of communication

    Open Access•Tatiana A Vlahovic, Sam G B Robert et al.•ARTICLE•Journal of Computer-Mediated…•2012•Cited by: 9•References: 8

    Media naturalness theory and social information processing theory make competing predictions regarding the effectiveness of different modes of communication at creating and maintaining emotionally intense social relationships. We explored how the duration of interaction and the form of laughter influenced happiness in communication modes with different levels of media naturalness. Forty-one participants completed a 14-day contact diary, recording…

  • The costs of family and friends: An 18-month longitudinal study of relationship maintenance and decay

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Evolution and Human Behavior•2011

  • Use of Social Network Sites and Instant Messaging Does Not Lead to Increased Offline Social Network Size, or to Emotionally Closer Relationships with Offline Network Members

    Open Access•Thomas V Pollet, Sam G B Robert et al.•ARTICLE•Cyberpsychology Behavior and…•2011

    The effect of Internet use on social relationships is still a matter of intense debate. This study examined the relationships between use of social media (instant messaging and social network sites), network size, and emotional closeness in a sample of 117 individuals aged 18 to 63 years old. Time spent using social media was associated with a larger number of online social network "friends." However, time spent using social media was not associa…

  • Communication in social networks: Effects of kinship, network size, and emotional closeness

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Personal Relationships•2011

    Communication is important in preventing social relationships from decaying over time. This study examined the effects of social network size, emotional closeness, and type of relationship (kinship vs. friendship) on communication patterns in the social networks of 251 women. Participants with large kin networks had longer times to last contact to both kin and friends. Participants with high levels of emotional closeness in their networks had sho…

  • Exploring variation in active network size: Constraints and ego characteristics

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Social Networks•2009•Cited by: 76•References: 32

    Studies of active personal networks have primarily focused on providing reliable estimates of the size of the network. In this study, we examine how compositional properties of the network and ego characteristics are related to variation in network size. There was a negative relationship between mean emotional closeness and network size, for both related and unrelated networks. Further, there was a distinct upper bound on total network size. Thes…

  • Individual differences and personal social network size and structure

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Personality and Individual…•2008

  • Exploring variation in active network size: Constraints and ego characteristics

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Social Networks•2009•Cited by: 76•References: 32

    Studies of active personal networks have primarily focused on providing reliable estimates of the size of the network. In this study, we examine how compositional properties of the network and ego characteristics are related to variation in network size. There was a negative relationship between mean emotional closeness and network size, for both related and unrelated networks. Further, there was a distinct upper bound on total network size. Thes…

  • Altruism in social networks: Evidence for a 'kinship premium

    Open Access•Oliver Scott Curry, Oliver Curry et al.•ARTICLE•British Journal of Psychology•2013•Cited by: 18•References: 46

    Why and under what conditions are individuals altruistic to family and friends in their social networks? Evolutionary psychology suggests that such behaviour is primarily the product of adaptations for kin- and reciprocal altruism, dependent on the degree of genetic relatedness and exchange of benefits, respectively. For this reason, individuals are expected to be more altruistic to family members than to friends: whereas family members can be th…

  • Effects of Duration and Laughter on Subjective Happiness Within Different Modes of Communication: Happiness and mode of communication

    Open Access•Tatiana A Vlahovic, Sam G B Robert et al.•ARTICLE•Journal of Computer-Mediated…•2012•Cited by: 9•References: 8

    Media naturalness theory and social information processing theory make competing predictions regarding the effectiveness of different modes of communication at creating and maintaining emotionally intense social relationships. We explored how the duration of interaction and the form of laughter influenced happiness in communication modes with different levels of media naturalness. Forty-one participants completed a 14-day contact diary, recording…

  • Managing Relationship Decay: Network, Gender, and Contextual Effects

    Open Access•Sam G B Robert, Sam B G Robert et al.•ARTICLE•Human Nature•2015•Cited by: 7•References: 73

    Relationships are central to human life strategies and have crucial fitness consequences. Yet, at the same time, they incur significant maintenance costs that are rarely considered in either social psychological or evolutionary studies. Although many social psychological studies have explored their dynamics, these studies have typically focused on a small number of emotionally intense ties, whereas social networks in fact consist of a large numbe…

  • Complex Sociality of Wild Chimpanzees Can Emerge from Laterality of Manual Gestures

    Open Access•Anna I Roberts, Lindsay Murray et al.•ARTICLE•Human Nature•2019•Cited by: 2•References: 96

    Humans are strongly lateralized for manual gestures at both individual and population levels. In contrast, the laterality bias in primates is less strong, leading some to suggest that lateralization evolved after the Pan and Homo lineages diverged. However, laterality in humans is also context-dependent, suggesting that observed differences in lateralization between primates and humans may be related to external factors such as the complexity of …

  • Social Network Analysis of a Chimpanzee (Pan troglodytes) Group in Captivity Following the Integration of a New Adult Member

    Open Access•Sergio Díaz, Lindsay Murray et al.•ARTICLE•International Journal of…•2020•Cited by: 1•References: 55

    Management of primates in captivity often presents the challenge of introducing new individuals into a group, and research investigating the stability of the social network in the medium term after the introduction can help inform management decisions. We investigated the behavior of a group of chimpanzees ( Pan troglodytes ) housed at Chester Zoo, UK over 12 months (divided into three periods of 4 months) following the introduction of a new adul…

  • Individual differences and personal social network size and structure

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Personality and Individual…•2008

  • Exploring variation in active network size: Constraints and ego characteristics

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Social Networks•2009•Cited by: 76•References: 32

    Studies of active personal networks have primarily focused on providing reliable estimates of the size of the network. In this study, we examine how compositional properties of the network and ego characteristics are related to variation in network size. There was a negative relationship between mean emotional closeness and network size, for both related and unrelated networks. Further, there was a distinct upper bound on total network size. Thes…

  • The costs of family and friends: An 18-month longitudinal study of relationship maintenance and decay

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Evolution and Human Behavior•2011

  • Use of Social Network Sites and Instant Messaging Does Not Lead to Increased Offline Social Network Size, or to Emotionally Closer Relationships with Offline Network Members

    Open Access•Thomas V Pollet, Sam G B Robert et al.•ARTICLE•Cyberpsychology Behavior and…•2011

    The effect of Internet use on social relationships is still a matter of intense debate. This study examined the relationships between use of social media (instant messaging and social network sites), network size, and emotional closeness in a sample of 117 individuals aged 18 to 63 years old. Time spent using social media was associated with a larger number of online social network "friends." However, time spent using social media was not associa…

  • Communication in social networks: Effects of kinship, network size, and emotional closeness

    Open Access•Sam G B Robert, Sam G B Roberts et al.•ARTICLE•Personal Relationships•2011

    Communication is important in preventing social relationships from decaying over time. This study examined the effects of social network size, emotional closeness, and type of relationship (kinship vs. friendship) on communication patterns in the social networks of 251 women. Participants with large kin networks had longer times to last contact to both kin and friends. Participants with high levels of emotional closeness in their networks had sho…

  • A structure-based repertoire of manual gestures in wild chimpanzees: Statistical analyses of a graded communication system

    Open Access•Anna I Roberts, Sarah-Jane Vick et al.•ARTICLE•Evolution and Human Behavior•2012

  • Closeness, loneliness, support: Core ties and significant ties in personal communities

    Open Access•Jens F Binder, Jens Binder et al.•ARTICLE•Social Networks•2012

  • Effects of Duration and Laughter on Subjective Happiness Within Different Modes of Communication: Happiness and mode of communication

    Open Access•Tatiana A Vlahovic, Sam G B Robert et al.•ARTICLE•Journal of Computer-Mediated…•2012•Cited by: 9•References: 8

    Media naturalness theory and social information processing theory make competing predictions regarding the effectiveness of different modes of communication at creating and maintaining emotionally intense social relationships. We explored how the duration of interaction and the form of laughter influenced happiness in communication modes with different levels of media naturalness. Forty-one participants completed a 14-day contact diary, recording…

  • Time as a limited resource: Communication strategy in mobile phone networks

    Open Access•Giovanna Miritello, Esteban Moro et al.•ARTICLE•Social Networks•2013

  • Altruism in social networks: Evidence for a 'kinship premium

    Open Access•Oliver Scott Curry, Oliver Curry et al.•ARTICLE•British Journal of Psychology•2013•Cited by: 18•References: 46

    Why and under what conditions are individuals altruistic to family and friends in their social networks? Evolutionary psychology suggests that such behaviour is primarily the product of adaptations for kin- and reciprocal altruism, dependent on the degree of genetic relatedness and exchange of benefits, respectively. For this reason, individuals are expected to be more altruistic to family members than to friends: whereas family members can be th…

  • Managing Relationship Decay: Network, Gender, and Contextual Effects

    Open Access•Sam G B Robert, Sam B G Robert et al.•ARTICLE•Human Nature•2015•Cited by: 7•References: 73

    Relationships are central to human life strategies and have crucial fitness consequences. Yet, at the same time, they incur significant maintenance costs that are rarely considered in either social psychological or evolutionary studies. Although many social psychological studies have explored their dynamics, these studies have typically focused on a small number of emotionally intense ties, whereas social networks in fact consist of a large numbe…

  • Complex Sociality of Wild Chimpanzees Can Emerge from Laterality of Manual Gestures

    Open Access•Anna I Roberts, Lindsay Murray et al.•ARTICLE•Human Nature•2019•Cited by: 2•References: 96

    Humans are strongly lateralized for manual gestures at both individual and population levels. In contrast, the laterality bias in primates is less strong, leading some to suggest that lateralization evolved after the Pan and Homo lineages diverged. However, laterality in humans is also context-dependent, suggesting that observed differences in lateralization between primates and humans may be related to external factors such as the complexity of …

  • Social Network Analysis of a Chimpanzee (Pan troglodytes) Group in Captivity Following the Integration of a New Adult Member

    Open Access•Sergio Díaz, Lindsay Murray et al.•ARTICLE•International Journal of…•2020•Cited by: 1•References: 55

    Management of primates in captivity often presents the challenge of introducing new individuals into a group, and research investigating the stability of the social network in the medium term after the introduction can help inform management decisions. We investigated the behavior of a group of chimpanzees ( Pan troglodytes ) housed at Chester Zoo, UK over 12 months (divided into three periods of 4 months) following the introduction of a new adul…

  • Loneliness is negatively related to Facebook network size, but not related to Facebook network structure

    Open Access•Riana M Brown, Sam G B Robert et al.•ARTICLE•Cyberpsychology Journal of…•2021

    High levels of loneliness are associated with poorer outcomes for physical and mental health and a large body of research has examined how using social media sites such as Facebook is associated with loneliness. Time spent on Facebook tends to be associated with higher levels of loneliness, whereas a larger number of Facebook Friends and more active use of Facebook tends to be associated with lower levels of loneliness. However, whilst the networ…

  • Hexaco Personality Factors and their Associations with Facebook use and Facebook Network Characteristics

    Open Access•Riana M Brown, Sam G B Robert et al.•ARTICLE•Psychological Reports•2023

    Personality factors affect the properties of 'offline' social networks, but how they are associated with the structural properties of online networks is still unclear. We investigated how the six HEXACO personality factors (Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness and Openness to Experience) relate to Facebook use and three objectively measured Facebook network characteristics - network size, density, and num…

  • No relationships between self-reported Instagram use or type of use and mental well-being: A study using a nationally representative online sample of UK adults

    Open Access•Sam G B Robert, Connor Malcolm et al.•ARTICLE•Cyberpsychology Journal of…•2024

    Use of Instagram has grown rapidly in the last decade, but the effects of Instagram use on well-being are still unclear, with many studies based on younger samples with a female bias. The aim of this study was to examine the associations between Instagram use and levels of anxiety, depression, and loneliness in a nationally representative sample of UK adults by age and gender. An online sample of 498 UK adults were recruited using Prolific (Age: …

  • Mother-Infant Sleeping Arrangements and Night-Time Touch Behaviors

    Open Access•Ingrid Boedker, Helen L Ball et al.•ARTICLE•Journal of Nonverbal Behavior•2026

    Affective touch is interpersonal touch which carries an emotional valence and is important to humans and other primates for stress resilience and social bonding. It is acknowledged that infants who sleep in close proximity to a caregiver receive more touch. However, mother-infant night-time touch has not been investigated with an understanding of affective touch mechanisms and with infant night-time location treated as a continuous rather than ca…

Psychology (15 works) · Social Psychology (13 works) · Developmental psychology (8 works) · Impact of Technology on Adolescents (7 works) · Computer Science (6 works) · Social media (6 works) · Attachment and Relationship Dynamics (5 works) · Biology (5 works) · World Wide Web (5 works) · Closeness (4 works)

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